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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/attribution_reporting/os_registration.h"
#include <utility>
#include <vector>
#include "base/check_op.h"
#include "base/metrics/histogram_functions.h"
#include "base/types/expected.h"
#include "components/attribution_reporting/os_registration_error.mojom-shared.h"
#include "net/http/structured_headers.h"
#include "url/gurl.h"
namespace attribution_reporting {
namespace {
using ::attribution_reporting::mojom::OsRegistrationError;
} // namespace
base::expected<std::vector<OsRegistrationItem>, OsRegistrationError>
ParseOsSourceOrTriggerHeader(std::string_view header) {
const auto list = net::structured_headers::ParseList(header);
if (!list) {
return base::unexpected(OsRegistrationError::kInvalidList);
}
return ParseOsSourceOrTriggerHeader(*list);
}
base::expected<std::vector<OsRegistrationItem>, OsRegistrationError>
ParseOsSourceOrTriggerHeader(const net::structured_headers::List& list) {
std::vector<OsRegistrationItem> items;
items.reserve(list.size());
for (const auto& parameterized_member : list) {
if (parameterized_member.member_is_inner_list) {
continue;
}
CHECK_EQ(parameterized_member.member.size(), 1u);
const auto& parameterized_item = parameterized_member.member.front();
if (!parameterized_item.item.is_string()) {
continue;
}
GURL url(parameterized_item.item.GetString());
if (!url.is_valid()) {
continue;
}
bool debug_reporting = false;
for (const auto& param : parameterized_member.params) {
if (param.first == "debug-reporting") {
if (param.second.is_boolean()) {
debug_reporting = param.second.GetBoolean();
}
break;
}
}
items.emplace_back(std::move(url), debug_reporting);
}
base::UmaHistogramCounts100("Conversions.OsRegistrationItemsPerHeader",
items.size());
if (items.empty()) {
return base::unexpected(OsRegistrationError::kInvalidList);
}
return items;
}
} // namespace attribution_reporting
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